Number of nX3 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 1 or 3 neighboring 1s.
A296573
Number of nX3 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 1 or 3 neighboring 1s.
Terms
- a(0) =7a(1) =31a(2) =135a(3) =616a(4) =2782a(5) =12544a(6) =56646a(7) =255699a(8) =1154239a(9) =5210459a(10) =23520746a(11) =106176061a(12) =479294501a(13) =2163605794a(14) =9766834956a(15) =44088930859a(16) =199023922776a(17) =898423280994
External references
- oeis: A296573